CH 4 IFSTA practice test 2
Which type of electrical heating occurs when the current flowing through a conductor exceeds its design
limits?
Select one:
a. Friction heating
b. Arcing
c. Overcurrent or overload
d. Sparking - Answer-Overcurrent or overload
What is the most effective means of establishing awareness of hazards in commercial, industrial, and
storage facilities with large fuel loads?
Select one:
a. Accessing code enforcement databases
b. Studying plat maps and building plans
c. Performing and updating preincident surveys
d. Contacting the facilities manager during the incident - Answer-Performing and updating preincident
surveys
Which statement about the dangers of products of combustion is accurate?
Select one:
a. Toxic products of combustion are released only during the combustion reaction.
,b. The toxic effects of smoke inhalation are the result of the interaction between carbon monoxide and
heat.
c. Low oxygen concentrations alone can result in hypoxia or death.
d. Visible smoke presents the greatest inhalation danger. - Answer-Low oxygen concentrations alone can
result in hypoxia or death.
In a ventilation-limited compartment fire that has a large volume of flammable gases, opening a door or
window could result in:
Select one:
a. piloted ignition.
b. backdraft.
c. flashover.
d. spontaneous ignition. - Answer-backdraft.
In a compartment fire, smoke flashover indicators include rapidly increasing volume, turbulence, optical
density, and:
Select one:
a. thermal properties.
b. ventilation.
c. darkening color.
d. fuel load. - Answer-darkening color.
What causes flaming combustion to occur?
Select one:
a. A gaseous fuel mixes with an adequate amount of oxygen and heats to ignition temperature.
b. A solid fuel mixes with an adequate amount of liquid fuel to be able to sustain an open burning flame.
c. A solid fuel encounters an open flame and entrains enough air to ignite.
, d. A gaseous fuel encounters an external heat source and experiences piloted ignition. - Answer-A
gaseous fuel mixes with an adequate amount of oxygen and heats to ignition temperature.
Which type of phenomenon occurs when the fire rapidly transitions from the growth stage to the fully
developed stage?
Select one:
a. Flame propagation
b. Flashover
c. Spontaneous ignition
d. Entrainment - Answer-Flashover
A fire is said to be in the _____ stage when it runs out of either available fuel or available oxygen.
Select one:
a. fully-developed
b. decay
c. incipient
d. growth - Answer-decay
The transfer of heat through and between solids is known as:
Select one:
a. self-heating.
b. convection.
c. conduction.
d. radiation. - Answer-conduction.
Which product of combustion acts as a chemical asphyxiant by excluding oxygen from the blood, leading
to hypoxia of the brain and tissues?
Which type of electrical heating occurs when the current flowing through a conductor exceeds its design
limits?
Select one:
a. Friction heating
b. Arcing
c. Overcurrent or overload
d. Sparking - Answer-Overcurrent or overload
What is the most effective means of establishing awareness of hazards in commercial, industrial, and
storage facilities with large fuel loads?
Select one:
a. Accessing code enforcement databases
b. Studying plat maps and building plans
c. Performing and updating preincident surveys
d. Contacting the facilities manager during the incident - Answer-Performing and updating preincident
surveys
Which statement about the dangers of products of combustion is accurate?
Select one:
a. Toxic products of combustion are released only during the combustion reaction.
,b. The toxic effects of smoke inhalation are the result of the interaction between carbon monoxide and
heat.
c. Low oxygen concentrations alone can result in hypoxia or death.
d. Visible smoke presents the greatest inhalation danger. - Answer-Low oxygen concentrations alone can
result in hypoxia or death.
In a ventilation-limited compartment fire that has a large volume of flammable gases, opening a door or
window could result in:
Select one:
a. piloted ignition.
b. backdraft.
c. flashover.
d. spontaneous ignition. - Answer-backdraft.
In a compartment fire, smoke flashover indicators include rapidly increasing volume, turbulence, optical
density, and:
Select one:
a. thermal properties.
b. ventilation.
c. darkening color.
d. fuel load. - Answer-darkening color.
What causes flaming combustion to occur?
Select one:
a. A gaseous fuel mixes with an adequate amount of oxygen and heats to ignition temperature.
b. A solid fuel mixes with an adequate amount of liquid fuel to be able to sustain an open burning flame.
c. A solid fuel encounters an open flame and entrains enough air to ignite.
, d. A gaseous fuel encounters an external heat source and experiences piloted ignition. - Answer-A
gaseous fuel mixes with an adequate amount of oxygen and heats to ignition temperature.
Which type of phenomenon occurs when the fire rapidly transitions from the growth stage to the fully
developed stage?
Select one:
a. Flame propagation
b. Flashover
c. Spontaneous ignition
d. Entrainment - Answer-Flashover
A fire is said to be in the _____ stage when it runs out of either available fuel or available oxygen.
Select one:
a. fully-developed
b. decay
c. incipient
d. growth - Answer-decay
The transfer of heat through and between solids is known as:
Select one:
a. self-heating.
b. convection.
c. conduction.
d. radiation. - Answer-conduction.
Which product of combustion acts as a chemical asphyxiant by excluding oxygen from the blood, leading
to hypoxia of the brain and tissues?
